US7038985B2 - System using radio frequency identification (RFID) for copy management of digital media - Google Patents

System using radio frequency identification (RFID) for copy management of digital media Download PDF

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Publication number
US7038985B2
US7038985B2 US10/781,563 US78156304A US7038985B2 US 7038985 B2 US7038985 B2 US 7038985B2 US 78156304 A US78156304 A US 78156304A US 7038985 B2 US7038985 B2 US 7038985B2
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United States
Prior art keywords
medium
rfid
copy
read
write unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US10/781,563
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English (en)
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US20050180566A1 (en
Inventor
Kim Annon Ryal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Sony Electronics Inc
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Sony Corp
Sony Electronics Inc
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Application filed by Sony Corp, Sony Electronics Inc filed Critical Sony Corp
Priority to US10/781,563 priority Critical patent/US7038985B2/en
Assigned to SONY CORPORATION, SONY ELECTRONICS, INC. reassignment SONY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RYAL, KIM ANNON
Priority to CA002553364A priority patent/CA2553364A1/fr
Priority to PCT/US2005/004574 priority patent/WO2005079359A2/fr
Priority to KR1020067016545A priority patent/KR101082267B1/ko
Priority to JP2006554152A priority patent/JP4796510B2/ja
Priority to EP05723022A priority patent/EP1716661A4/fr
Priority to CNA200580004906XA priority patent/CN1934818A/zh
Publication of US20050180566A1 publication Critical patent/US20050180566A1/en
Priority to US11/361,291 priority patent/US7292512B2/en
Publication of US7038985B2 publication Critical patent/US7038985B2/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
    • G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
    • G11B20/00275—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored on a chip attached to the record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00876—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy wherein physical copy protection means are attached to the medium, e.g. holograms, sensors, or additional semiconductor circuitry
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
    • G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
    • G11B23/0028—Details
    • G11B23/0035—Details means incorporated in the disc, e.g. hub, to enable its guiding, loading or driving
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G11B23/283—Security features, e.g. digital codes
    • G11B23/284—Security features, e.g. digital codes on the record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols

Definitions

  • This invention is related in general to processing of digital information and more specifically to a system for rights management of digital media including limiting the number of copies that can be made from a digital medium.
  • the digital format has quickly become the format of choice for many types of information including audio, video, computer data, etc.
  • CDROM Compact Disk-Read-Only Memory
  • the CDROM can also be used to write and read video content and data files.
  • Another popular media format is the Digital Versatile Disk (DVD) that is similar in basic approach to the CDROM in that it is a disc-shaped optical media that is read with a drive mechanism using a laser.
  • DVD format is becoming popular to deliver high-quality audio and video (e.g., full-length movies) content.
  • RAM persistent solid-state random access memory
  • a mini-disc format uses magnetic media, as do the current form of “micro” hard disk drives.
  • Other media formats exist such as magnetic, optical, solid state, etc.
  • digital media is a low-cost way to provide high-quality content to end users, such as listeners, viewers, or computer users
  • one problem with using digital media distribution is that the media can be easily copied. Typically the copying occurs without any additional compensation to the content owner, distributor or other controlling authority.
  • a digital watermark approach puts identifying information in association with a physical medium, such as a CDROM, or can embed the identifying information in a portion (or throughout) the digital information on the medium.
  • a physical medium such as a CDROM
  • bits can be used throughout a song to identify the owner of the content and to indicate any use restrictions.
  • One problem with this approach is that the amount of bits for watermarking can take away from the capacity of the medium to store the intended content. Also, the watermarking can degrade the quality of the content.
  • the copy control information can be read and/or written by the drive mechanism (i.e., playback device), by a copying system such as a computer, or by other devices that may be used to write or read information on the medium.
  • a DVD can be provided with a “generation” count. That is a user can purchase an original DVD with a generation count of 3. When a first generation copy of the original DVD is made then the generation count on the first generation copy is set to 2. When a second generation copy is made the second generation copy has a count that is set to 1. When a third generation copy is made then the generation count is set to 0 and no further copies will be allowed.
  • a preferred embodiment of the invention uses a writable RFID tag embedded in a physical medium such as a CDROM or DVD. Each time a copy of the medium is created, a variable or count stored in the writable RFID is updated. In cases where the RFID read/write sensor is in communication with the device making a copy of the medium, the created copy can have its permitted number of copies set to zero, or other restrictions put in place. In this manner the total number of copies of an original product can be regulated.
  • the RFID can be read or written from a mechanism in a CDROM or DVD player.
  • the read/write mechanism can be in a different device such as in a computer, or in another device.
  • the RFID read/write mechanism works in conjunction with the CDROM or DVD drive so that copies of the medium can not be made without checking information in the RFID and updating the RFID data, as necessary.
  • Encryption can be used to secure the copy count (e.g., with a hash, or other signature approach) with the content.
  • Other approaches can use digital watermarks, authentication, password protection, etc., to prevent tampering with information in the RFID and defeating the copy control.
  • Copy Prevention Rights Management (CPRM) rules can be used in connection with the invention to regulate the medium as desired.
  • Different embodiments of the invention can include other types of copy control information such as those described by Copy Control Information (CCI), Extended Copy Control Information (ExCCI), Copy Generation Management System (CGMS), and other standards.
  • CCI Copy Control Information
  • ExCCI Extended Copy Control Information
  • CGMS Copy Generation Management System
  • any information relating to copy control or access rights can be used with embodiments of the present invention.
  • the invention provides A method for enforcing access rights to a medium, the method comprising permanently securing a read/write RFID to the medium; storing in the RFID an indication relating to access rights; detecting when a copy of the medium is selected to be made; reading the access rights indication; and if the indication meets a predetermined condition then enforcing access rights to the medium.
  • the invention provides a method for preventing copy protection in a medium, the method comprising permanently securing a read/write RFID to the medium; storing in the RFID an indication of the number of copies that can be made of the medium; detecting when a copy of the medium is selected to be made; reading the indication of the number of copies that can be made of the medium; if the indication meets a predetermined condition then preventing creation of a copy of the medium.
  • the invention provides an apparatus for preventing copy protection in a medium, the apparatus comprising a read/write RFID tag permanently secured to the medium; and a machine readable value stored in the RFID tag, wherein the value indicates a limit on the number of copies that can be made from the medium.
  • FIG. 1 illustrates a media player with internal RFID read/write unit
  • FIG. 2 illustrates a media player with external RFID read/write unit
  • FIG. 3 illustrates a media player and internal RFID read/write unit connected to a remote authorization process
  • FIG. 4 illustrates a media player and external RFID read/write unit connected to a remote authorization process.
  • FIG. 1 illustrates a preferred embodiment of the invention.
  • a machine readable storage medium such as DVD 100 is provided with a read/write RFID tag 110 .
  • the RFID tag in FIG. 1 is shown near the center hole of the DVD disc (in exaggerated size), the RFID tag can be mounted, affixed or embedded or otherwise coupled to a DVD disc as is practicable.
  • popular read/write RFID tags e.g., manufactured by Texas Instruments, Maxell Corp. of America, etc.
  • the antenna can be placed anywhere on or in the disc as long as it does not interfere with the media operation.
  • the RFID chip and/or antenna can be placed on the top side of the DVD, edge, etc.
  • Media player 140 can be, e.g., a DVD player, in which case media read/write unit 120 is a subsystem within the DVD player. Also included in the DVD player is an RFID read/write (or sensor) unit 130 . Depending on the RFID design and position, and on the design and sensitivity of RFID read/write unit unit 130 , the RFID read/write unit unit may need to be in close proximity to the DVD disc. In such a case it may be desirable to mount RFID read/write unit components adjacent, onto, or in tandem with media read/write components. Especially where the RFID tag antenna is very small, the detection distance can be on the order of millimeters.
  • the media read/write hardware for a DVD for example, already requires a laser beam and detector assembly to be in close proximity with the DVD disc.
  • RFID read/write unit components can be integrated with the laser emitter and/or detector, laser read head arm, housing, drive motor assembly, etc.
  • a user places a DVD disc, such as DVD disc 110 , into the DVD player.
  • RFID read/write unit 130 reads copy control information from RFIG tag 110 .
  • the RFID tag can include a number that represents the number of copies that can be made from the DVD disc.
  • the RFID tag also includes an identification code for the DVD disc, itself.
  • the DVD ID code is correlated to information stored optically on the disc, itself, so that the media read/write subsystem can obtain the correlated information.
  • a digital watermark, ID value, sample of audio or video data on the disc, etc. can be used to identify the DVD as containing information or content that is proprietary to a manufacturer, distributor or other entity.
  • Matching of the RFID tag ID code and the correlated information on the medium is performed by a control system (not shown). If the ID code and correlated information match then positive identification of the DVD disc is said to have occurred and the copy control information from the RFID tag is obtained and used to permit or restrict different types of uses of the DVD. For example, where a “number of copies” (NOC) value is used, then a check for positive identification of the disc may not take place until a point in time when a user request (or automated request) is received to make a copy of the DVD. Then, if positive identification is made, the NOC value is checked by the RFID read/write unit to determine if it is greater than zero.
  • NOC number of copies
  • NOC value is greater than zero, a signal is generated (e.g., from the RFID read/write Unit device to the control system or media read/write subsystem) to permit the media player to make a copy of the DVD.
  • a signal is generated (e.g., from the RFID read/write Unit device to the control system or media read/write subsystem) to permit the media player to make a copy of the DVD.
  • the NOC value is decremented and updated to the RFID tag.
  • One embodiment of the invention contemplates using security techniques such as public key encryption, digital signatures, authentication, etc. to verify that the information obtained from the RFID tag is genuine, and has not been tampered.
  • security techniques such as public key encryption, digital signatures, authentication, etc.
  • any type of security approaches can be used.
  • FIG. 2 illustrates an embodiment where the RFID read/write unit is external to the media player.
  • the RFID read/write unit can be a unit manufactured and sold separately from the media player and can be in communication with the media player, and the media player's media read/write subsystem, via wired, wireless, optical or other communication links.
  • operation of the system can be as above, where the RFID read/write unit is internal to the media player.
  • the RFID read/write unit is not able to read or write the RFID tag when the media is inside the media player, a user can place the media in proximity to the RFID read/write unit and to the media read/write subsystem of the media player at different times.
  • a user can place a DVD in proximity to the RFID read/write unit so that the sensor can obtain the RFID tag ID code.
  • the user can place the DVD into the DVD player where the correlated information is obtained so that the system can verify that the DVD disc corresponds to the copy control information.
  • the user places the DVD disc, again, near the RFID read/write unit and a blank DVD is inserted into the media player (or another recording device).
  • the system sends a signal to a DVD write mechanism to write, or copy, a new DVD disc.
  • the original DVD's NOC value is updated, accordingly. Note that variations in the order of steps are possible.
  • steps can be modified or omitted while achieving a desired result.
  • the last step of placing the DVD in proximity to the RFID read/write unit can be omitted and the RFID information can be checked and updated in the first step, although this approach may be less secure.
  • FIGS. 3 and 4 illustrate systems where an internal ( FIG. 3 ) or external ( FIG. 4 ) RFID read/write unit and the media read/write subsystem are in communication with an external authorization process 200 .
  • authorization process 200 can be at a remote location and communication among media read/write unit 120 , RFID read/write unit 130 and the authorization process can be over a network such as the Internet.
  • This approach provides additional monitoring, control and security options.
  • the step of matching correlated information on a DVD with an RFID ID code can be performed at the authorization process.
  • Additional rules or information stored at a remote location can be used in an authorization grant.
  • detection of the location of the media player can be made by knowledge of the routing of a message transfer over the Internet, by obtaining cooperation of a user's Internet Service Provider (ISP), etc.
  • authorization process 200 can refuse to permit copying of certain media types based on the detected (or provided) location of the media player or other copy device.
  • routines of the present invention can be implemented using C, C++, Java, assembly language, etc.
  • Different programming techniques can be employed such as procedural or object oriented.
  • the routines can execute on a single processing device or multiple processors. Although the steps, operations or computations may be presented in a specific order, this order may be changed in different embodiments. In some embodiments, multiple steps shown as sequential in this specification can be performed at the same time.
  • the sequence of operations described herein can be interrupted, suspended, or otherwise controlled by another process, such as an operating system, kernel, etc.
  • the routines can operate in an operating system environment or as stand-alone routines occupying all, or a substantial part, of the system processing.
  • a “computer-readable medium” for purposes of embodiments of the present invention may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, system or device.
  • the computer readable medium can be, by way of example only but not by limitation, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, system, device, propagation medium, or computer memory.
  • a “processor” or “process” includes any human, hardware and/or software system, mechanism or component that processes data, signals or other information.
  • a processor can include a system with a general-purpose central processing unit, multiple processing units, dedicated circuitry for achieving functionality, or other systems. Processing need not be limited to a geographic location, or have temporal limitations. For example, a processor can perform its functions in “real time,” “offline,” in a “batch mode,” etc. Portions of processing can be performed at different times and at different locations, by different (or the same) processing systems.
  • Embodiments of the invention may be implemented by using a programmed general purpose digital computer, by using application specific integrated circuits, programmable logic devices, field programmable gate arrays, optical, chemical, biological, quantum or nanoengineered systems, components and mechanisms may be used.
  • the functions of the present invention can be achieved by any means as is known in the art.
  • Distributed, or networked systems, components and circuits can be used.
  • Communication, or transfer, of data may be wired, wireless, or by any other means.
  • any signal arrows in the drawings/ Figures should be considered only as exemplary, and not limiting, unless otherwise specifically noted.
  • the term “or” as used herein is generally intended to mean “and/or” unless otherwise indicated. Combinations of components or steps will also be considered as being noted, where terminology is foreseen as rendering the ability to separate or combine is unclear.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Storage Device Security (AREA)
  • Television Signal Processing For Recording (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
US10/781,563 2004-02-17 2004-02-17 System using radio frequency identification (RFID) for copy management of digital media Expired - Fee Related US7038985B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US10/781,563 US7038985B2 (en) 2004-02-17 2004-02-17 System using radio frequency identification (RFID) for copy management of digital media
JP2006554152A JP4796510B2 (ja) 2004-02-17 2005-02-11 無線ｉｃタグ（ｒｆｉｄ）を用いてデジタル媒体のコピーを管理する装置
PCT/US2005/004574 WO2005079359A2 (fr) 2004-02-17 2005-02-11 Systeme de gestion de copies de supports numeriques base sur l'identification par radiofrequence (rfid)
KR1020067016545A KR101082267B1 (ko) 2004-02-17 2005-02-11 디지털 매체의 복사 관리를 위해 ｒｆｉｄ를 사용하는 시스템
CA002553364A CA2553364A1 (fr) 2004-02-17 2005-02-11 Systeme de gestion de copies de supports numeriques base sur l'identification par radiofrequence (rfid)
EP05723022A EP1716661A4 (fr) 2004-02-17 2005-02-11 Systeme de gestion de copies de supports numeriques base sur l'identification par radiofrequence (rfid)
CNA200580004906XA CN1934818A (zh) 2004-02-17 2005-02-11 用于数字介质拷贝管理的使用射频识别(rfid)的系统
US11/361,291 US7292512B2 (en) 2004-02-17 2006-02-23 System using radio frequency identification (RFID) for copy management of digital media

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US (2) US7038985B2 (fr)
EP (1) EP1716661A4 (fr)
JP (1) JP4796510B2 (fr)
KR (1) KR101082267B1 (fr)
CN (1) CN1934818A (fr)
CA (1) CA2553364A1 (fr)
WO (1) WO2005079359A2 (fr)

Cited By (20)

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US20050270964A1 (en) * 2004-05-26 2005-12-08 Funai Electric Co., Ltd. Optical disc having RFID tag, optical disc apparatus, and system for preventing unauthorized copying
US20050289139A1 (en) * 2004-06-24 2005-12-29 Sony Corporation Information processing apparatus and method, information recording medium, and computer program
US20060067187A1 (en) * 2004-09-23 2006-03-30 Rirf Technologies Corporation Optical disc with identification tag
US20060230463A1 (en) * 2005-04-07 2006-10-12 International Business Machines Corporation Method, apparatus, and computer program product for controlling copying and playback of digital data
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CA2553364A1 (fr) 2005-09-01
US7292512B2 (en) 2007-11-06
US20060174353A1 (en) 2006-08-03
US20050180566A1 (en) 2005-08-18
WO2005079359A2 (fr) 2005-09-01
CN1934818A (zh) 2007-03-21
EP1716661A2 (fr) 2006-11-02
JP2007528061A (ja) 2007-10-04
KR101082267B1 (ko) 2011-11-09
WO2005079359A3 (fr) 2005-10-27
KR20070012345A (ko) 2007-01-25
WO2005079359A9 (fr) 2006-08-31
EP1716661A4 (fr) 2011-11-16

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